Sed command to find, manipulate and replace a number Post: 302257868

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error

error(n)						       Tcl Built-In Commands							  error(n)

__________________________________________________________________________________________________________________________________________________

NAME

       error - Generate an error

SYNOPSIS

       error message ?info? ?code?
_________________________________________________________________

DESCRIPTION

       Returns	a  TCL_ERROR  code, which causes command interpretation to be unwound.	Message is a string that is returned to the application to
       indicate what went wrong.

       If the info argument is provided and is non-empty, it is used to initialize the global variable errorInfo.  errorInfo is used to accumulate
       a stack trace of what was in progress when an error occurred; as nested commands unwind, the Tcl interpreter adds information to errorInfo.
       If the info argument is present, it is used to initialize errorInfo and the first increment of unwind information will not be added by  the
       Tcl  interpreter.   In other words, the command containing the error command will not appear in errorInfo; in its place will be info.  This
       feature is most useful in conjunction with the catch command: if a caught error cannot be handled successfully, info can be used to  return
       a stack trace reflecting the original point of occurrence of the error:
	      catch {...} errMsg
	      set savedInfo $errorInfo
	      ...
	      error $errMsg $savedInfo

       If  the	code argument is present, then its value is stored in the errorCode global variable.  This variable is intended to hold a machine-
       readable description of the error in cases where such information is available; see the tclvars manual page for information on  the  proper
       format  for the variable.  If the code argument is not present, then errorCode is automatically reset to ``NONE'' by the Tcl interpreter as
       part of processing the error generated by the command.

SEE ALSO

       catch(n), tclvars(n)

KEYWORDS

       error, errorCode, errorInfo

Tcl																	  error(n)